Two cards are drawn one by one at random from a pack of $52$ cards. The probability that both of them are king, is
$\frac{2}{{13}}$
$\frac{1}{{169}}$
$\frac{1}{{221}}$
$\frac{{30}}{{221}}$
A bag contains $30$ balls numbered from $1$ to $30$, one ball is drawn randomly. The probability that number on the ball is multiple of $5$ or $7$ is
Three coins are tossed once. Let $A$ denote the event ' three heads show ', $B$ denote the event ' two heads and one tail show ' , $C$ denote the event ' three tails show and $D$ denote the event 'a head shows on the first coin '. Which events are Compound ?
Consider the experiment of rolling a die. Let $A$ be the event 'getting a prime number ', $B$ be the event 'getting an odd number '. Write the sets representing the events $^{\prime}$ not $A\,^{\prime}$.
A card is drawn at random from a pack of $52$ cards. The probability that the drawn card is a court card i.e. a jack, a queen or a king, is
If a coin be tossed $n$ times then probability that the head comes odd times is